Laughing Falcon

Overview

The laughing falcon (Herpetotheres cachinnans) is a medium-sized raptor whose identity is announced long before the bird is seen. The advertising call — a long, rhythmic series of far-carrying hollow wah notes that gradually rises in pitch and volume, sometimes preceded by a bubbly chuckling — is one of the most recognizable sounds in Neotropical lowland forest. Adults measure 45–56 cm with a 79–94 cm wingspan. The plumage pattern is bold: creamy white head, underparts, and nape patch, separated from the dusky-brown wings and back by a broad black facial mask and narrow dark collar across the upper chest. The tail has 4–5 white bands.

The laughing falcon is a specialist — snakes make up the core of its diet, including venomous species such as coral snakes. It hunts from exposed perches at the forest edge, scanning the ground below, then drops feet-first onto prey with considerable impact force. The beak is used to sever the snake’s spine just behind the head immediately after capture. Lizards, small rodents, bats, and fish round out the menu when snakes are scarce.

Why Tortuguero

The species is resident at Tortuguero year-round and is among the more frequently recorded raptors during canal tours. It favors edge habitats — the interface between tall forest and open water or cleared areas — which aligns well with the canal corridor’s structure: long stretches of tall trees meeting open water. Perches in large emergent trees or snags overlooking the canal are typical hunting posts.

Paradoxically, the laughing falcon is noted to do better in disturbed forest than in deep primary forest; secondary growth with good canopy height suits it. Tortuguero’s mix of primary forest interior and managed edge along the canal creates a patchwork that supports a resident population at relatively high visibility compared to many other raptors in the park.

How to see them (honestly)

• By ear first: The call carries far across water. A canal tour that starts before mid-morning is most likely to encounter a singing bird.
• Scan emergent trees: Look for a large pale bird on an exposed dead branch or snag at canopy height above the canal margin.
• Patient watching: Once located perched, the bird may remain in place for many minutes, surveying the ground below. This is the best window for extended observation.
• Not shy: The laughing falcon is less cryptic than most raptors and often calls while fully exposed — one of the easier raptor species to observe well from a boat.

Status note

The IUCN rates the laughing falcon as Least Concern with an estimated global population exceeding 500,000 mature individuals. The species tolerates habitat disturbance better than most raptors and remains common in secondary forests and forest-edge mosaics across its range. In Costa Rica it is widespread from sea level to mid-elevation. No significant threats are identified at the population level, though local declines are expected where snake populations are suppressed by intensive pesticide use in agricultural zones adjacent to forest.